The 'Fashion Police' star says that Dunham, who promotes positive body image, sends the wrong message to people, telling them to 'stay fat' and 'get diabetes.'

Joan Rivers apparently thinks that Lena Dunham's message of having positive body image may lead to health problems. The "Fashion Police" star had an interview on "The Howard Stern Show" on Tuesday, March 25 where she blasted the "Girls" creator for her fashion style.

"Lena Dunham, who I think is again terrific, how can she wear dresses above the knee?" Rivers asked Stern, who replied, "I think the thing we love about her is she doesn't give a s**t." He added, "Do you watch 'Girls'? Do you watch when she's naked on there? She did a whole episode in a bikini, it was the funniest f**king thing I've ever seen."

Rivers also mentioned controversy surrounding Dunham's Vogue cover. In the end, she praised the actress, saying, "I love that she's funny and love that she's done well. But don't let them laugh at you physically. If you look the way you look, Lena, and that's fine and you're funny, don't say it's okay that other girls can look like this. Try to look better."